1 files changed, 31 insertions, 0 deletions
diff --git a/src/px.c b/src/px.c
index 267b2e0..7458bcd 100644
--- a/src/px.c
+++ b/src/px.c
@@ -181,6 +181,37 @@ pxRectfill(int x0, int y0, int x1, int y1, PxCol col)
 }
 
 void
+pxLine(int x0, int y0, int x1, int y1, PxCol col)
+{
+	int dx, dy, sx, sy, err, e2;
+
+	dx = x1 - x0;
+	dx = (dx < 0) ? (-dx) : (dx);
+	dy = y1 - y0;
+	dy = (dy < 0) ? (dy) : (-dy);
+	sx = (x0 < x1) ? (1) : (-1);
+	sy = (y0 < y1) ? (1) : (-1);
+	err = dx + dy;
+
+	for (;;) {
+		pxPset(x0, y0, col);
+
+		if (x0 == x1 && y0 == y1)
+			break;
+
+		e2 = 2 * err;
+		if (e2 >= dy) {
+			err += dy;
+			x0 += sx;
+		}
+		if (e2 <= dx) {
+			err += dx;
+			y0 += sy;
+		}
+	}
+}
+
+void
 _pxSpr(const PxSprArgs *args)
 {
 	int w = (args->w < 0) ? (int)(args->spr->w) : (args->w);